Panasonic CS-E18SD3UAW service manual - Page 53

Electric Heater Control 1

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12.7 Electric Heater Control 1 Starting condition A) When all condition (1+2+3+4+5+6+7) are fulfilled. 1 Operation ON 2 Indoor Heating mode 3 Thermostat ON 4 Temperature different control (°F) Temp difference (Remote controller setting - Intake air temperature) When air conditioning is switched ON Heater ON 7.2 Heater OFF 1.8 ON by Temp difference ≥ 7.2°F OFF by Temp difference 1.8°F 5 Intake air temperature control Example: 1 When air conditioning is switch ON, Remote controller setting = 82.4°F Intake air temperature = 78.8°F Temp difference = 82.4-78.8 = 3.6°F Heater ON 2 After a while when Remote controller setting =82.4°F Intake air temperature = 80.6°F Temp difference = 82.4-80.6 =1.8°F Heater OFF 3 After a while when Temp difference ≥ 7.2°F Heater ON Intake air temperature [°F] 84.2 78.8 Heater OFF Heater ON When air conditioning is switched ON 6 Evaporator pipe sensor control Evaporator pipe sensor [°F] Heater OFF 140 ( β ) Heater ON 132.8 ( α ) When air conditioning is switched ON 7 Indoor Fan speed ≥ Lo Fan Control content 1 Electric heater will be switch ON when all condition for starting condition fulfilled. 2 Once Electric heater switched ON, It will operate at least 3 minutes. 53

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53
12.7 Electric Heater Control 1
Starting condition
A)
When all condition (1+2+3+4+5+6+7) are fulfilled.
1
Operation ON
2
Indoor Heating mode
3
Thermostat ON
4
Temperature different control
When air conditioning is
switched ON
(Remote controller setting -
Intake air temperature)
Temp difference
7.2
ON by
Temp difference ≥ 7.2°F
(°F)
OFF by
Temp difference
1.8°F
1.8
Heater ON
Heater OFF
Example:
1
When air conditioning is switch ON,
Remote controller setting = 82.4°F
Intake air temperature = 78.8°F
Temp difference = 82.4-78.8 = 3.6°F
Heater ON
2 After a while when
Remote controller setting =82.4°F
Intake air temperature = 80.6°F
Temp difference = 82.4-80.6 =1.8°F
Heater OFF
3 After a while when
Temp difference
≥
7.2°F
Heater ON
5
Intake air temperature control
When air conditioning is
switched ON
Intake air temperature
[°F]
84.2
78.8
Heater ON
Heater OFF
6
Evaporator pipe sensor control
When air conditioning is
switched ON
Evaporator pipe sensor
[°F]
140 (
β
)
132.8 (
α
)
Heater ON
Heater OFF
7
Indoor Fan speed
≥
Lo Fan
Control content
1
Electric heater will be switch ON when all condition for starting condition fulfilled.
2
Once Electric heater switched ON, It will operate at least 3 minutes.